[techtalk] modem problems

[Chou, Mary]

I have a similar problem...worse actually.
I'm completely new to Linux (running Red Hat 7) +
I tried to get ppp to work with no results.

Running Linux by O'Reilly instructions include:
create a script (exec chat, followed by modem commands)
create another script (exec pppd with some additional
flag to use the first script)

my modem is on COM3 and therefore, ttyS2
but when I run the 2nd script, *nothing* happens

-----Original Message-----
From: Kathryn Hargreaves [mailto:kathryn at cs.umb.edu]
Sent: Sunday, October 29, 2000 9:23 AM
To: techtalk at linuxchix.org
Cc: kathryn at cs.umb.edu
Subject: [techtalk] modem problems



Hi, I'm having trouble getting an internal modem to work.
It's on ttyS1 and when I connect to it with minicom, it sits
there for half a minute or so, then echoes the init string back
in bursts of maybe 16 chars (it looks like about 16 but I didn't
count to be exact).  I can type commands like ATDT2345... and
they get processed and echo back a long while (several seconds)
later.  Needless to say, using the modem for ppp (the intended use)
is pretty much hopeless.

Any idea what might be going on?  I suspect the kernel is somehow
not receiving the ttyS1 interrupts (irq 3) but is somehow noticing
much later that chars are available there.  But that's just a wild
guess.  The kernel does seem to detect ttyS1 normally in the boot
messages.

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